Surah Al-Mu'minun, ayah 96

ٱدۡفَعۡ بِٱلَّتِي هِيَ أَحۡسَنُ ٱلسَّيِّئَةَۚ نَحۡنُ أَعۡلَمُ بِمَا يَصِفُونَ ٩٦

Idfa' billatī hiya ahsanus-sayyi'ata nahnu a'lamu bimā yasifūn

Repel, by [means of] what is best, [their] evil. We are most knowing of what they describe.